Download the driver for OS X 10.4 (or later) from the http://www.ftdichip.com/Drivers/VCP.htm and save it to the hard disk. The driver is now available in disk image (.dmg) format. Run the installer by double clicking on the FTDIUSBSerialDriver.dmg icon.

When the computer has rebooted, plug in the device. If the device is installed properly, you will see entries in the /dev directory:

/dev/cu.usbserial-xxxxxxxx /dev/tty.usbserial-xxxxxxxx

where xxxxxxxx is either the device's serial number.

Now you can talk to the box via /dev/tty.usbserial-xxxx using the FHZ1000 Protocol.

continue:

Keep in mind that you need a special Perl module (Device::SerialPort) to use the following tests. To install those modules on OS X you'll need the Apple XCode Tools.

Simple Driver Tests - you must change the device name to yours found in "ls /dev/tty.usbserial*" at the top of each file!